Soaking: Soak the seeds in 0.1mg/L (4kg of water per seed) solution for 24 hours, with a ratio of 1:0.8 between the solution and the seed. After drying in a cool place, sow the seeds to accelerate germination, increase root length, and increase fresh weight per plant; Soaking aged corn seeds with 0.33mg/L (1.2kg water per seed) of medicine can increase the germination rate from 30% to 85%, and the seedlings are neat and robust.

       Flowering period: can improve the drought resistance of crops. Spring sown corn is generally sprayed once in the early stage of female panicle differentiation, small flower differentiation, tasseling, and 7 and 17 days after silk emergence, respectively; Summer sown corn should be sprayed once in the early stage of female spikelet differentiation, flower differentiation, or 7 days after silk emergence. Spraying a 50kg/acre foliar solution with a concentration of 0.01mg/L (40kg water per grain) per acre can promote the growth of maize affected by water stress, reduce the relative permeability of the protoplast membrane, increase nitrate reductase activity, increase photosynthesis capacity, increase the number and weight of grains per ear, reduce the empty stem rate, and improve the double ear rate.

        Panicle stage: 0.01mg/L (40kg water for each grain) solution is applied to the whole plant spray treatment of corn, which can significantly reduce the abortion rate of the grains at the top of the ear, and can increase the yield by about 20%. The effect of pre-treatment before tasseling is better than that of application after silk spinning. Although increasing the frequency of spraying corn ears can reduce the rate of abortion, the effect is not as good as spraying the entire plant. The treated corn plants have darker leaf color, thicker leaves, higher specific leaf weight and chlorophyll content, and an enhanced rate of photosynthesis. The activity of the top grains of the fruit cluster is enhanced (i.e., the relative conductivity decreases). In addition, post spinning treatment also has the effect of increasing the weight of 1000 grains.

        Trumpet period: Spray 0.15mg/L (2.7kg of water per grain) solution from the horn stage to the early stage of silk production, increasing the number of grains per spike by 41, reducing bald spots by 0.7cm, and increasing the weight of one hundred grains by 2.38g, resulting in an increase of 21.1% in yield., Spraying 0.01mg/L (40kg of water per grain) solution 50kg/acre at the mouth of a large horn can reduce the rate of maize ear top grain abortion and increase yield.

        Silking stage: Spraying with 0.01mg/L (40kg of water per grain) of 50kg/acre can increase the photosynthetic rate, chlorophyll content, and specific leaf weight of plants, promote grain filling, and especially provide sufficient nutrition for the grains at the top of the ear, allowing them to develop into normal grains, reducing the abortion rate of corn grains and increasing grain yield by about 15%. But do not mix with alkaline pesticides.

       Entropy Mao 1 # and ethephon are a special dwarf, robust and anti lodging growth regulator for corn. spray treatment can play a role in dwarfing, increasing production, preventing premature senescence, and improving corn yield during tasseling.